Experimental Inspection of Damage and Performance Evaluation after Repair and Strengthening of Jiamusi Highway Prestressed Concrete Bridge in China

The main objectives of this study are to inspect and identify any damage of jaimusi highway prestressed concrete bridge after repair and strengthening of damaged structural members and to evaluate the performance of the bridge structural members by adopting static load test. Inspection program after repair and strengthening includes identifying and evaluating the structural members of bridge such as T-shape cantilever structure, hanging beams, corbels, external tendons, anchor beams, sticking steel plate, and piers. The results of inspection show that the overall state of the bridge structural member after repair and strengthening is good. The results of rebound test of concrete strength show that the average strength of concrete is 46.31Mpa. Whereas, the average value of concrete strength of anchor beam is 49.82Mpa. According to the results of static load test, the experimental values are less than theoretical values of internal forces, deflection, and strain, indicating that the stiffness of the experimental structure, overall deformation and integrity satisfy the designed standard and the working performance is good, and the undertaking capacity has a certain surplus. There is not visible change in the length and width of cracks and there are not new cracks under experimental load.

Authors:

• Ali Fadhil Naser
• Wang Zonglin

Keywords:

• Jiamusi Bridge
• Damage inspection
• deflection
• strain.

References:

[1] W. N. Al-Rifaie, and A. S. Kareem, "Bridges", first edition, University
of Technology, Baghdad, Iraq, 1986, pp 5-8.
[2] Washington State Department of Transportation, "Washington State
Bridge Inspection Manual", Technical Manual, Washington, USA,
2010.
[3] J. C. Robert, D. Robert, and M. Hussam, "Inspection and management
of bridges with fracture-critical details", National Cooperation Highway
Research Program (NCHRP), A synthesis of Highway Practice,
Transportation of Research Board (TRB), Washington. D. C, USA,
2005.
[4] V. K. Raina, "Concrete Bridge: Inspection, Repair, Strengthening,
Testing, Load Capacity, and Evaluation", Copyright ┬® by V. K. Raina,
USA, ISBN 0-07-462349-4, 1996.
[5] [5] A. Ahmed, "Diagnostic evaluation and repair of deteriorated
concrete bridge". Final Report, Department of Civil Engineering,
University of Mississippi, 2004.
[6] X. Yunping, S. Benson, A. Naser, A. Andi, W. Su, X. Zhaohui, and A.
Ayman, "Assessment of the cracking problem in newly constructed
bridge decks in Colorado", Final Report, Report No.CDOT-DTD-R-
2003-3, The Colorado Department of Transportation, 2003.
[7] L. Hai, L. Wei, J. Daved, H. Ai, "Strengthening an in-Service Concrete
with CFRP Bars", Journal of Zhejiang University SCIENCE, A 10(5),
p. p 635-644. 2009.
[8] R. A. Brandon, "Method of Strengthening Monitored Deficient Bridge",
Master Thesis, Department of Civil Engineering, Kansas State
University, 2007.
[9] Traffic Highway Research Institute, "Experimental Method for Long
Span Concrete Bridge", People's Republic of China, 1980.
[10] JTJ021-89, "General Code for Design of Highway Bridges and
Culverts", People's Republic of China. 1989.
[11] JTJ023-85, "Code for Design of Highway Reinforced Concrete and
Prestressed Concrete Bridges and Culverts", People's Republic of China,